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Costa Del Mar Mainsail Polarized Sunglasses

Costa Del Mar

  • $222.00
    Unit price per 


+ -

Product Advantages


Premium Polarized 580 Lenses*
Filtering reflective glare is essential for anyone on the water or outdoors. We sell only polarized sunglasses.

100% UV Protection
Your Costas absorb 100% of UV light, providing you the best in light management and protection.

Scratch Resistant and Durable
The C-Wall coating provides extra scratch-resistance and a barrier that repels water, oil and sweat for easy cleaning.


Product details

For the performance and style you need on and off the water, our Mainsail frames are your go-to pair for every outing and adventure. Built with the same high-quality materials and features you want everywhere from the beach to the big blue, Mainsail frames help keep excess light out with micro side shields and hooding, your frames in place with improved Hydrolite™ grips on the temples and help keep sweat and water out of your eyes with eyewire drains and channels.The Mainsail frames are your day-to-day sunglasses that stay stylish while relaxed on land and ready for anything while out on water.


  • Model name: Mainsail
  • Item no: 6S9107 910705 55-18
  • Frame color: Gray Crystal
  • Lens color: Blue Mirror
  • Lens material: Polarized Polycarbonate (580P)
  • Frame fit: Regular
  • Size: L
  • Lens curve: Base 6


Regular Fitting

A large lens front designed to fit those with an average-sized head.


6 Base Curve - Medium Coverage

Frames with medium-coverage and wrap that value style but still perform.


Lens details and technology


Blue Mirror

Best for bright, full-sun situations on the open water and offshore.

  • Gray Base
  • 10% light transmission


Optimal usage

  • Boating and fishing in deep water
  • Open reflective water
  • Harsh sun


Costa 580® lenses
Costa 580® lenses were designed by in-house light spectrum experts to enhance colors because standard sunglass lenses fell short.

The lens' multipatented technology
manages light by:

  • Absorbing Harmful High-Energy Blue Light (HEV)
  • Enhancing Reds, Greens, and Blues
  • Filtering Out Harsh Yellow


580® lightwave Polycarbonate

  • C-Wall® Molecular Bond
  • Mirror (Optional)
  • Polycarbonate Lens
  • Polarized Film
  • Polycarbonate Lens
  • C-Wall® Molecular Bond


Lightweight, Impact-Resistant

  • Polycarbonate & the lightest, most durable lens material option
  • C-WALL® is a molecular bond which is scratch-resistant




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